File: utils.c

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/*
  Copyright (C) 2007 MySQL AB

  This program is free software; you can redistribute it and/or modify
  it under the terms of version 2 of the GNU General Public License as
  published by the Free Software Foundation.

  There are special exceptions to the terms and conditions of the GPL
  as it is applied to this software. View the full text of the exception
  in file LICENSE.exceptions in the top-level directory of this software
  distribution.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include "setupgui.h"

#include "driver.h"
#include "stringutil.h"


extern SQLHDBC hDBC;
extern SQLWCHAR **errorMsgs;


void FreeEnvHandle(SQLHENV hEnv)
{
  if (hDBC == SQL_NULL_HDBC)
    SQLFreeHandle(SQL_HANDLE_ENV, hEnv);
}


void Disconnect(SQLHDBC hDbc, SQLHENV hEnv)
{
  SQLDisconnect(hDbc);

  if (hDBC == SQL_NULL_HDBC)
    SQLFreeHandle(SQL_HANDLE_DBC, hDbc);

  FreeEnvHandle(hEnv);
}


SQLRETURN Connect(SQLHDBC *hDbc, SQLHENV *hEnv, DataSource *params)
{
  SQLRETURN   nReturn;
  SQLWCHAR      stringConnectIn[1024];
  size_t inlen= 1024;

  assert(params->driver && *params->driver);

  /* Blank out DSN name, otherwise it will pull the info from the registry */
  ds_set_strattr(&params->name, NULL);

  if (ds_to_kvpair(params, stringConnectIn, 1024, ';') == -1)
  {
      /* TODO error message..... */
      return SQL_ERROR;
  }
  inlen-= sqlwcharlen(stringConnectIn);

  if (hDBC == SQL_NULL_HDBC)
  {
    nReturn= SQLAllocHandle(SQL_HANDLE_ENV, NULL, hEnv);

    if (nReturn != SQL_SUCCESS)
      ShowDiagnostics(nReturn, SQL_HANDLE_ENV, NULL);

    if (!SQL_SUCCEEDED(nReturn))
      return nReturn;

    nReturn= SQLSetEnvAttr(*hEnv, SQL_ATTR_ODBC_VERSION,
                           (SQLPOINTER)SQL_OV_ODBC3, 0);

    if (nReturn != SQL_SUCCESS)
      ShowDiagnostics(nReturn, SQL_HANDLE_ENV, NULL);

    if (!SQL_SUCCEEDED(nReturn))
    {
      return nReturn;
    }

    nReturn= SQLAllocHandle(SQL_HANDLE_DBC, *hEnv, hDbc);
    if (nReturn != SQL_SUCCESS)
      ShowDiagnostics(nReturn, SQL_HANDLE_ENV, *hEnv);
    if (!SQL_SUCCEEDED(nReturn))
    {
      return nReturn;
    }
  }

  nReturn= SQLDriverConnectW(*hDbc, NULL, (SQLWCHAR*)(stringConnectIn),
                             SQL_NTS, NULL, 0, NULL, SQL_DRIVER_NOPROMPT);

  if (nReturn != SQL_SUCCESS)
    ShowDiagnostics(nReturn, SQL_HANDLE_DBC, *hDbc);

  return nReturn;
}


void ShowDiagnostics(SQLRETURN nReturn, SQLSMALLINT nHandleType, SQLHANDLE h)
{
  BOOL        bDiagnostics= FALSE;
  SQLSMALLINT nRec= 1;
  SQLWCHAR     szSQLState[6];
  SQLINTEGER  nNative;
  SQLWCHAR     szMessage[SQL_MAX_MESSAGE_LENGTH];
  SQLSMALLINT nMessage;

  if (h)
  {
    *szSQLState= '\0';
    *szMessage= '\0';

    while (SQL_SUCCEEDED(SQLGetDiagRecW(nHandleType,
      h,
      nRec,
      szSQLState,
      &nNative,
      szMessage,
      SQL_MAX_MESSAGE_LENGTH,
      &nMessage)))
    {
      szSQLState[5]= '\0';
      szMessage[SQL_MAX_MESSAGE_LENGTH - 1]= '\0';


      /*add2list(errorMsgs, szMessage);*/

      bDiagnostics= TRUE;
      nRec++;

      *szSQLState= '\0';
      *szMessage= '\0';
    }
  }

  switch (nReturn)
  {
  case SQL_ERROR:
    /*strAssign(popupMsg, L"Request returned with SQL_ERROR.");*/
    break;
  case SQL_SUCCESS_WITH_INFO:
    /*strAssign(popupMsg, L"Request return with SQL_SUCCESS_WITH_INFO.");*/
    break;
  case SQL_INVALID_HANDLE:
    /*strAssign(popupMsg, L"Request returned with SQL_INVALID_HANDLE.");*/
    break;
  default:
    /*strAssign(popupMsg, L"Request did not return with SQL_SUCCESS.");*/
    break;
  }
}